Noise eliminator



NOV. 1, 1932. w, K, FLAWN 1,886,332

NOI SE ELIMINATOR Filed Deo. 15. 1929 Inwzof/ Walter" K FLOUUJTU.

Patented Nov. 1, 1932 4u'uirfrnieif. FLAVIN, or marmeren, MASSACHUSETTS NOISE l ELIMINATOR Application filed December 13, `19529.V Serial No. 413,699.V l

rIhis invention relates to a noise eliminator for plumbing systems and has for its object to provide a liexible device which may be utilized for the purpose of preventl 5 ing the noisesthat emanate from the various fixtures of a plumbing system from being transferred throughout the system and being audible in rooms other than those in which the fixtures are located.

Another object of the invention is to embody in the flexible device a meansfor preventing the spaced apart ends of the supply pipe, to which the device is attached, from separating when the device is subjected .'15 to internal pressure. y

The invention consists in a noise eliminator as set forth in the following specification and particularly as pointed out in the claims thereof.

Referring to the drawing :V

Figure 1 represents a partial side elevation and partial central lon itudinal section of a noise eliminator embo ying my invention.

Fig. 2 is a transverse section taken on the line 2-2 of Fig. 1 looking in the direction of the arrows on said line.

Like numerals refer to like parts throughout the several views of the drawing.

In the drawing, 5 and 6 represent the spacedapart end portions of rigid pipe sections constituting the supply pipe leading to a plumbing fixture as, for example, a bathl tub, wash bowl, flush tank, faucet or any other apparatus from which water is discharged and in which various forms of noises develop as a result of the discharge of said water, and 7 represents a noise eliminator which is interposed between the pipe sections 5 and 6 for the purpose of interrupting the rigid continuity of the supply pipe.

The noise eliminator 7 embodies therein a pair of oppositely disposed fluid conducting site end portions of which are secured to the members 8 and 9 either by brazing, soldering or welding. The bellows 10 is constructed of resilient sheet metal and embodies therein a plurality of annular folded portions 11 which co-operate to render the bellows veryv flexible. The, fluid conducting member 8 is Vthat are provided upon the interior of said `vinternally screw-threadedat 12 toreceive a member 13 ofk a pipe unionr14 ofvwell known form by means of which said fluid conducting vmember is attached to the pipej. The fluid conducting member .9 yconstitutes `one of the members of a pipefunion Vlfbyv means of which themember 9 is attached to the'pipe 6. f Rigidlysecured 4infany suitable manner Vto the fluid conducting member 8 and, in effect,- constituting Van extension therefor is a 60 tube`16 which projects from said conducting member through the bellows 10 and termi- .nates a short distance from the fluid conducting member 9, there being suliicient space between the vadjacentextremities of the tube 116 andconducting member 9 to permit each memberto move independently oftheother.

AThe, tube' 16and fluid conducting member 9 are, ,however located sufliciently lclose t0 gether to, in eli'ect, provide a continuous pas- 70 sageway for the passage of water through the bellows 10, and the tube furthermore constitutes a stop to limit the movement of the fluid conducting `strut 17,- and kmounted within the liuid conducting member 9 and extending transversely across the interior thereof is a V-shap'ed 85 strut 18. The strut- 17 is .detachably secured within the conducting member 8 by means of slotted pins 19 which project Vlaterally a short distance' into the interior of the conducting member 8 and are rigidly secured thereto in 90 any suitable manner. The strut 18 is detachably mounted upon the interior of the members 8 and 9 and a bellows 10, the oppofluid conducting member 9 upon hooks 2O member. p a

The struts 17 and 18 are connected together bymeans of a` link 21 which extends longiktudinally through the tube 16 upon the longitudinal median line thereof and saddle portions 22 are provided at the end portions of the link Q1 where it is connected to the struts la and 1S in order that a free movement may be permitted between said members. Caps Q3 have screw-threaded engagement with the fluid conducting member 8 and enclose the A portions of the latter through which the pins 19 project and prevent a leakage of the fluid fromaround said pins.

The general operation of the device hereinbefore specifically described is as follows Assuming that the device has been incorporated in a plumbing system, having been inserted between two sections of a water supply pipe leading to a plumbing fixture, if this fixture is operated as, for example, by opening a faucet, and the action of the water under pressure in flowing through the faucet causes the supply pipe to vibrate, thereby producing disagreeable noises, the vibrations will travel along the supply pipe until they reach the noise eliminator 7, whereupon said vibrations upon being transmitted to the fluid conducting member to which the pipe is attached, will cause said iiuid conducting member'to oscillate slightly sidewise, carrying with it the end portion of the bellows which is attached thereto. The bellows, however, being fleXible will not move at its opposite end and will, therefore, transmit no sidewise movements to the iiuid conducting member that is attached at its opposite end, and the link, furthermore, that is normally located upon the longitudinal median line of the device being itself flexible, will not transmit any lateral movement between the iiuid conducting members. The vibrations and noises, therefore, that have been conducted along the water supply pipe from the plumbing fixture to the bellows will not be transmitted by said pipe beyond said bellows.

It is evident that the pressure fluid may travel in either direction through the device,

and vibrations traveling in either direction will be arrested when they reach the bellows.

I claim:

l. A noise eliminator of the character described having, in combination, a pair of longitudinally aligning fluid conducting members, a bellows constructed of flexible sheet metal interposed between said fluid conducting members and attached at its opposite ends thereto, oppositely disposed radial pins rigidly mounted in one of the fluid conducting members, oppositely disposed hooks integral with the other fluid conducting member, a strut loosely mounted upon said pins, another strut loosely mounted upon said hooks, and a link extending through the bellows and loosely connected f; at its opposite ends to each of the struts.

2. A noise eliminator of the character described having, in combination, a pair of fluid conducting members, a bellows constructed of flexible sheet metal interposed between said fluid conducting members and my hand. Y y

WALTER K. FLAVIN. 

